CloudTrail Duplicate Log Avoidance

ID: cloudtrail-dup-logs

Severity: medium

Author: princechaddha

Tags: cloud,devops,aws,amazon,cloudtrail,aws-cloud-config

Description

Ensure CloudTrail logging is configured to prevent duplicate recording of global service events across multiple trails.

YAML Source

id: cloudtrail-dup-logs
info:
  name: CloudTrail Duplicate Log Avoidance
  author: princechaddha
  severity: medium
  description: |
    Ensure CloudTrail logging is configured to prevent duplicate recording of global service events across multiple trails.
  impact: |
    Duplicate log entries can lead to increased storage costs and complicate log analysis and anomaly detection efforts.
  remediation: |
    Configure only one multi-region trail to log global service events and disable global service logging for all other trails.
  reference:
    - https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudtrail-find-log-files.html
  metadata:
    max-request: 2
  tags: cloud,devops,aws,amazon,cloudtrail,aws-cloud-config
variables:
  region: "ap-south-1"

flow: |
  code(1)
  for(let CloudTrail of iterate(template.cloudtrailname)){
    set("trail", CloudTrail)
    code(2)
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      aws cloudtrail list-trails --region $region --query 'Trails[*].Name' --output json

    extractors:
      - type: json
        name: cloudtrailname
        internal: true
        json:
          - '.[]'

  - engine:
      - sh
      - bash
    source: |
         aws cloudtrail describe-trails --region $region --trail-name-list $trail --query 'trailList[*].IncludeGlobalServiceEvents' --output json

    matchers:
      - type: word
        words:
          - "true"

    extractors:
      - type: dsl
        dsl:
          - '"Ensure only one trail in Amazon CloudTrail is configured for global service events to avoid duplicates: " + trail'
# digest: 4b0a00483046022100d1139235f7eab3bb93560b30c88ceda4eb8fa8c658cc821693198e7640bea17902210086106d9e04a589f3e46bbfa41593f4a8979c3af2fe342e2842e20a6ee03a35aa:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "cloud/aws/cloudtrail/cloudtrail-dup-logs.yaml"

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